Governor for air-compressors.



B. B. COUP.

GOVERNOR FOR AIR OOMPRESSORS.

APPLIOATION FILED DEC. 26. 1907.- 914,1 16, Patented Mar. 2, 1909. 3SHEETS-SHEET l.

Quucntoz E. B. OOUP.

GOVERNOR FOB AIR oommnssons.

APPLIOATION FILED DEC. 26. 1907.

9 1 4;, 1 1 6 Patented Mar. 2, 1909.

3 SHEETS-SHEET 2.

vwamtoz 13 8 11 woes [w i s B. B. GOUP.

GOVERNOR FOB. AIR OOMPRESSORS.

APPLICATION FILED DEC. 26. 1901.

914; 1 1 6. Patented Mar. 2, 1909.

3 SHEETS-SHEET 3.

. front elevation thereof ELI B. OOUP, OF MCKEESPORT, PENNSYLVANIA.

GOVERNOR FOR AE-GUMJPREESGRS.

No. crane.

Specification of Letters Patent.

Patented March 2, TQOQ.

Application filed December 26, 1907.. Serial No. item.

To all whom it may concern:

Be it known that I, ELI B. Cour, a citizen of the United States ofAmerica, residing at McKees ort, in the'county of Allegheny and State ofenns lvania, have invented certain. new and use Improvements inGovernors for Air-Compressors, of which the following is aspecification, reference being bad therein to the accompanyin drawing.

This invention re ates to governors and the object thereof is to providea overnor in a manner as hereinafter set fort for automaticallycontrolling the operation of an air compressor and the engine operatingthe compressor when a predetermined pressure stage has been reached toovercome any liability of injury to the compressor or to the engine.

Although the governor is designed primarily for the purpose set forth,yet it is also adapted for any purposesv for which it is foundapplicable for example, in connection with a compound locomotive forcontrolling the admission of steam to the locomotive cylinder.

With the foregoing and other objects in view, the invention consists ofthe novel construction, combination and arrangement of parts,hereinafter more specifically described and illustrated in theaccompanying drawings, wherein is shown the preferred embodiment of theinvention, but it is to be understood that changes, variations andmodifications can be resorted to which come within.

the scope of the claims hereunto appended.

In the drawings, Figure 1 is a vertical sectional view of a overnorconstructed in accordance with this invention. Fig. 2 isa partly insection, Fig. 3 is a vertical sectional view of the governor valve. Fig.4. is a top plan showing the ada tation of the governor in connectionwit an engine, an air compressor and a receiver. Fig. 5 is a sectionaldetail of one end of the cylinder of the compressor showing an unloadingvalve. Fig. .6 is an enlarged View of the unloading valve, and, 7 is asectional view illustrating a steam controlling device for the engine.

The air receiver A, the air compressor B, the engine C and steamcontrolling device D shown in Fi 3 are illustrated by way of example sot at the adaptation of the governor in accordance with this inventionwith the said elements referred to can be thoroughly understood. The aircompressor B a valve body I. The head F is furthermore provided with ascrew-threaded lug N through which extends a plunger cured a cap P inwhich extends the lug N and which forms a pressure cham rer R adapted tocommunicate with the governor in a manner hereinafter explained. In Fig.7 is shown the steam controlling device which has a pipe connection Swith a steam supply. The

provided with a seat S for v'alve S Projecting from the valve body 8 isa steam supply pipe S which communicates with the engine cylinder. Thestem of the valve S is indicated by the reference character S and hasits outer end pivoted at S to a lever 55 mounted u on a su port S formedintegral with the hracket which projects from the valve body S. Formedintegral with the bracket S is a cylinder S in which is located a pistonS having a piston rod S which is pivotally connected at its outer end atS to the lever S The cylinder 8 communicates with the governor in amanner hereinafter set forth. The elements referred to in this paragraphare of known construction and no claimis made for the same and they aremerely shown so that the function of a governor in accordance with thisinvention can be thoroughly understood. Referring to Figs. 1, 2 and 3 ofthe drawings, in which is illustrated a governor in accordance with thisinvention, 1 denotes a bracket which is secured upon the base of thecompressor B and the said bracket 1 has formed integral therewith orconnected thereto a casmg 2 having its lower'end enlarged at 3 andinteriorly threaded at 4; To the enlarged lower end 3 of the casing 2 issecured the upper end of a valve casing 5, the latter being peripherallythreaded at 6 for engagement with the threads 4. of the end 3 of thecasing 2. The valve casing 5 at its lower end is formed witha pair oflateral nipples 7, 8 which extend in op site directions with respect toeach ot er.- The To the head F is se glpe connection S opens into valvecasing 5 is furthermore provided with a depending nipple 9; each of thenipples 7, 8 an 9 is interiorly screw-threaded. A pipe 10 is connectedto the nip le 7, a pipe 11 connected to the nipple 8 an a pipe 12attached to the ni ple 9. The pipe 10-leads to the cylinder of thesteamcontrolling device. The pipe 11 communicates with the chamber R andthe pipe 12 communicates with the receiver A. The pipe 10 communicateswith the interior of the valve casing 5 through the medium of the ports13 the pi e 11 communicates with the interior of t 1e valve casing 5 bythe port 14; the pipe 12 opens directly into the lower end of the valvecasing 5. The lower end of the valve casing 5 is formed with a valvechamber 15 and a valve seat 16. The function of the valve 16 is to close communication between the pipe 12 and the pipes 10, 11, such functionis had when the valve 16 engages the seat 14. The valve 16 is providedwith a stem 17 which not only extends through the valve casing 5 butalso up and through the casing 2, the latter constituting a guide forthe upper portion of the stem 17. The stem 17 is formed with an axialbore 18 which opens at its lower end into a pair of laterally extendingorts 19 and at its upper end into a pair of aterally extending ports 20,these latter being termed exhaust ports. The stem 17 is furthermoreprovided with a plurality of collars 21 for the purpose of guiding thestem within the valve casing 5. The collars 21 are arranged on the lowerportion of the valve stem 17. The outer end of the stem 17 is providedwith a notch or concavity 22 in which engages a de ending lug 23projecting from the lower ace of the upper arm of a stirrup 24, thelatter being rectangular incontour and surrounding the casing 2 andvalve casing 5. The lower arm of the stirrup 24 has depending therefroma hanger 25 u 011 which are mounted a plurality of weights 26, thefunction of which will be hereinafter explained. Intermediate the endsof the valve stem 17 a pair of circumferentially extending grooves 27 isprovided and adapted to engage in the said grooves is a pin 23 whichextends through an o ening provided therefor in the casing 2.

e pin 28 is carried by a resilient'arm 29 fixed to the stud 30projecting laterally from the valve casing 2. The function of the pin 28will be hereinafter explained.

It will be assumed that the air in the receiver A has reacheda stageabove a predetermined point. It will be evident that the increasedpressure in the receiver will cause the shifting of the valve 16 off itsseat 14. Such action will establish communication between the pipes 10,11 and 12, the pressure upon the valve 16 overcoming the pressureexerted against the stem 17 and the valve 16 by the weighted stirrup 24.As

communication has now been established between the receiver and thepipes 10, 11',

tinuing the operation of the air compressor until the pressure of air inthe receiver A becomes normal. When the pressure in the receiver A hasbeen reduced, the valve 16 will be caused to assume its seat through themedium of the weighted stirrup'24. This will allow the exhaust of airfrom the cylinder S and chamber R through the ipes 10, 11, ports 19,axial bore 18 and ex" aust ports 20 and allow the engine to again takesteam to further operate the compressor. In order that the engine maystart slightly in advance of thecompressor the two ports 13 areprovided, to rapidly exhaust the air, whereas but a single port l isemployed for exhausting the air from .the pipe 11.

To insure a positive movement of the stem 17 the pin 19 and theresilient arm are provided, these two elements holding the stem until asufficient high or low pressure of air has been obtained to raise orrelease the stern.

What I claim is:

1. A governor for the urpose set forth comprising a valve casing aving aplurality of nipples at one end, one of said nipples opening directlyinto the interior of the easing, said casing furthermore provided with alaterally extending port and a air of laterally extending ports, another0 said nipples communicating with the interior of said valve casinthrough saidv single port and the other of said nipples communicatingwith the interior of said valve casing through said air of laterallyextending ports, said casin urthcrmore provided with a valve seat helowsaid ports, a valve normally engaging said seat, a valve stem projectingfrom the valve and rovided with an axial bore and further provided withupper and lower ports, and a weighted stirru engaging with the valvestem for norma y maintaining the valve in engagement with-its seat.

2. A governor for the urpose set forth comprising a valve casing ravinga lurality of nipples at one end, one of sai nipples opening directlyinto the interior of the easing, said casing furthermore provided with alaterally extending port and a air of laterally extend nng ports,another 0 said nipples communicating with the interior of said valvecasing through said single port and the other of said nipplescommunicating with the 1 extending nipple and the interior of thecasinterior of said valve casing through said air of laterally extendingorts, said casing rthermore provided wit a valve seat below said ports,a valve normally engaging said seat, a valve stem projectin from thevalve and provided with an axial ore and further provlded with upper andlower ports,- a weighted stirru engaging with the valve stem for norma ymaintaining the valve in en agement with its seat, said valve adapted tobe shifted from its seat by fluid ressure,

said stirrup adapted to shift the va ve to its seat when the pressure isreduced upon, the valve, and spring-pressed means extending in saidcasing for temporarily holding the stem in its shifted position.

3. A governor for the urposeset forth comprising a valve casing ormed atone end with a depending nipple and with a pair of laterally extendingnipples, said depending nipple adapted to communicate with the fluipressure supply, one of said laterally extending nipples adapted tocommunicate with the steam controllin device of an engine, and the otherof sai laterally extending nipples adapted to communicate with the unloaing valvegmechanism of an air compressor, said casing furthermorerovided with a pair of ports for establishing communication between oneof said laterally extending nipples and the interior of'the casing andsaid casing furthermore provided with a port for establishingcommunication between the other laterally extending nipple'and theinterior'of the casing, said casing further having a valve seat a valvearranged Within said casing and adapted to engage said seat below saidports and whenin engagement with said seat shutting ofl' communicationbetween the laterally extendin nip les and the other of said ni ples,sai va ve shifting from its seat by md ressure whereb communication isestablis ed between sai laterally extending nipples and the fluidpressure supply, and spring-pressed means extendin in said casing fornormally maintaining sai valve in engagement with its seat.

4. A governor for the urpose set forth comprising a valve casing ormedat one end with a depending nipple and with a pair of laterallyextending nipples, said dependin nippleadapted to communicate with theflui pressure supply, one of said laterally extendmg nipples a apted tocommunicate with the steam controllin device of an engine, and the otherof said aterally extending nip les adapted to communicate with theunloadin valve mechanism of an air compressor, sai casing furthermoreprovided with a pair of ports for establishing communication between oneof said laterally extendin nipples and the interior of the casing andsai casing furthermore provided with a port for establishingcommunication between the other laterally said casing further having avalve seat in belew said ports, avalve arranged within said casing andadapted to engage said seat and when in engagement with said seatshutting ofi communication between the laterally extending nip les andthe other of said nipples,

said valve s ifted from its seatby fluid ressure whereby communicationis establlshed between said laterally extending nipples and the fluidpressure supply, a valve stem Iproj cote v with the steam contro ingdevice of an engine, and the other of said laterally extending nipplesadapted to communicate with the unloading valve mechanism of an aircompressor, said casing furthermore provided with a pair of ports forestablishing commu nicatlon between one of said laterally extendingnipples and the interior of the casing and said casing furthermoreprovided with a 7 port for establishing communication between the otherlaterally extending nip le and the interior of the casing, said casingfiirther having a valve seat below said ports, a valve arranged withinsaid casing and adapted to engage said seat and when in engagement withI said seat shuttin oif communication between the laterally extendingnipples and the other of said ni ples, said valve shifted from its seatby fluid ressure whereb communication is established between sailaterally extendin nipples and the fluid pressure supply, a V vs stemrejecting from said va ve and provided wit means for exhausting pressurefrom said valve casing when the va ve is seated, and a weighted stirrupengaging with said valve stem' for normally maintaining the valveagainst its seat.

6. A governor for the urpose set forth comprising avalve casing ormed atone end with a depending nipple and with a pair of laterally extendingnipples, said depending nipple adapted to communicate with the fluidressure supply, one of said laterally with the steam contro ling deviceof an engine, and the other of said laterally extending nipples adaptedto communicate with the. unloading valve mechanism of an air compressor,said casing furthermore provided with a pair of ports for establishingcommunication between one of said laterally extending nipples and theinterior of the casing extending nipples adapted tocommunicatemunication is establis and said casing furthermore providedwith a port for establishing communication between the other laterallyextending nip le and the interior of the casing, said casing urtherhaving a valve seat below said ports, a valve arranged within saidcasing and adapted to engage said seat and when in engagement with saidseat shutting oil? communication between the laterally extending nipplesand the other of said hi ples, said valve shifted from its seat by: fiuiressure whereb comiied between sai laterally extendin nipples and thefluid pressure supply, a va ve stem projecting from said valve andprovided with means for exhaust- .3

pressed means extending in said casing for 2Q temporarily holding thevalve stem in its adjusted position.

In testimony whereof I aflix my signature in the presence of twowitnesses.

ELI B. OUP. Witnesses MAX H. SRoLovITz, C. V. BROOKS.

